Ore-feeder.



T. G. WORTHINGTON & H. 0. LANGSTAFF.

ORE FEEDER.

' APPLICATION FILED JANJS, 1912.

1,098,206. Patented May 26, 1914.

SHEETSSHBET 1.

] woe-sated g yaw/w T. G. WORTHINGTON & H. O. LANGSTAPP.

ORE FEEDER.

APPLIOATION IILED 11111.19, 1912.

1,098,206. Patented May 26, 1914.

2 SHEETS-SHEET 2.

FIIIH [1 14 worlzu'n lon fiQLanysZaff- (invented v if TED s'r THOMAS'G. WORTHINGTON AND HER-MAN O. LANGSTAEE, OF OATMAN, ARIZONA.

ORE-FEEDER.

of the United States, residing at Oatman, in

the county of Mohave and State of Arizona, have invented new and useful Improvements in Ore-Feeders, of which the following is a specification.

The general object of the invention is to simplify the construction of devices employed for feeding ore to the mortar of a stamp mill.

Other objects will appear and be better understood from the following description taken in connection with the accompanying drawings, in which- Figure 1 is a side elevation of our device partly in section. Fig. 2 is an end elevation of the same. Fig. 3 is a sectional plan view on the line 33 of Fig. 1.

5 indicates the mortar of a stamp battery into which extends a stamp proper 6, to which is connected the stem 7 8 indicates a chute which conveys the ore from a place of storage (not shown), and 9 indicates a beveled gear forming a portion of the device for controlling the passage of ore through the chute and into the mortar 5. The controlling device may be of any preferred or suitable construction and is adapted, when actuated, to admit of a predetermined quantity of ore to pass from the chute into the mortar.

10 indicates a frame or bracket having one side portion connected to the chute and another side portion directed below the chute and the controlling device. The shaft 11 which has one end portion journaled in the bracket or frame 10 at a point below the chute, has its opposite end suit-- ably connected to actuate the controlling device. The wheel 12 which is fixed to the shaft 11 between the arms 13-43 of a yoke, which arms are loose on the shaft 11, is turned in one direction by an element in the form of a friction clamp indicated by 1 1 and connected to a spring 15 carried by the arms 1313 of the yoke. The element 14 is normally spaced from the periphery of the wheel 12, but is moved into contact with the said wheel and against the action of its spring through the cam action exerted by the inclined surface 16 of the end of a lever 17 The lever 17 extends between the arms l313 of the yoke and is mounted on a Specification of Letters Patent.

Application filed January 19, 1912.

Y Patented May 28, 1914.

Serial No. 672,098

pivot 18 passing through the ends of said arms.

A'link 19 connects the lever 17 with onev end of a lever arm 20 which extends through and is pivotally mounted in the frame 21 supported by the hanger 22. The other end of the lever arm is adapted to receive the stem 7 of the stamp at a point below the tappet 23 on the stamp stem.

When the amount of material in the mortar 5 is reduced to such a degree that the tappet 23 in its descent will strike the lever arm 20, the link 19, the lever 17 and one end of the yoke will be moved upwardly. Simultaneously with the upward movement of the yoke, however, the lever 17 will be rocked, thus causing its cam surface 16 to force the shoe into frictional contact with the periphery of the wheel 12 so that when the yoke moves upwardly the wheel 12 will be turned and the controlling device actuated to liberate a quantity of ore from the chute 8.

When the stem 7 raised the parts are restored to their normal positions by means of a spring 24 connected to a depending extension 25 on the frame 10 and also connected to the arms 1313 by means of a yoke 26. The spring 24 in restoring the parts to normal position draws downwardly upon the yoke at the pivot point of the lever 17 and thus relieves the element 1 1 of the pressure of the lever and thereby restores the parts to their normal positions.

A brake shoe 27 is held in frictional contact with the periphery of the wheel 12 by means of a yielding connection 28 and the function of this brake shoe is to prevent any return movement of the wheel after the same has been turned in one direction by the element 14.

29 indicates a set screw for varying the tension of the yielding connection 28. Inasmuch as the degree of turning movement of the wheel is controlled by the degree of angular movement of the lever arm 20, the movement of the latter arm and consequently the movement of the wheel 12 may be varied by adjusting the screw 30 in the bracket 31 so as to limit the upward movement of that portion of thelever connected to the stem 7.

Although we have shown and described one embodiment of our invention it is to be understood that we are not to be limited to the specific arrangement and construction of parts since various changes may be made, Within the scope of the appended claim Without departing from the spirit or sacrificing any of the advantages of the invention.

What We claim as new is:

In a feed device for stamp mills, the combination With a conveyer, of a frame connected thereto and extending below the same, a Wheel rotatably supported in said frame, a yoke pivotally supported adjacent said Wheel, a spring connected to the frame and to the yoke for inducing a restoring movement of the latter, a clamp member yieldingly supported by the yoke, a lever pivotally connected to the yoke and extend ing beyond the same, brake mechanism for the Wheel in movement in one direction, and lever-and-yoke operating means actuated by the stem of the stamp and connected to the lever.

In testimony whereof We aiiix our signatures in presence of two Witnesses.

THOMAS Gr. NORTHINGTON. HERMAN O. LANGSTAFF.

WVitnesses S. R. REEVES, S. S. JONES.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Eatents.

' Washington, D. G. 

